Kosan Industries Pvt. Ltd. Manufactures Wrench Type Industrial Gas Cylinder Valve without Safety Device. Kosan Industries Pvt. Ltd. Has received ISO 9001:2000 certifications. Kosan Industries Pvt. Ltd. Is the supplier of valves and regulators of LPG in India. Wrench Type Industrial Gas Cylinder Valve without Safety Device is simple in design, robust, reliable and durable. Wrench Type Industrial Gas Cylinder Valve without Safety Device is available with spares which include spindles, gland packing, gland washers, top nuts, etc.